HoneyHive vs W&B Weave
Both are observability & tracing tools. Here is how they actually differ on price, billing model and deployment.
HoneyHive
An OpenTelemetry-based observability and evaluation platform aimed squarely at production AI agents at enterprise scale. Strong free developer tier, then a wall - everything above it is contact-sales with no published rate card.
W&B Weave
Weights & Biases' LLM tracing and evaluation product, now owned by CoreWeave after a reported $1.7B acquisition. Billed on GB of trace data ingested rather than spans or requests, which is a genuinely different cost model to everything else in the category.
| HoneyHive | W&B Weave | |
|---|---|---|
| Category | Observability & Tracing | Observability & Tracing |
| Our rating | 4/5 | 4/5 |
| Starting price | Custom (contact sales) | Per-seat plus usage |
| Billing meter | event | gb-ingested |
| Free plan | Yes | Yes |
| Free self-hosting | No or paid tier only | No or paid tier only |
| Best for | Teams running agent-heavy production workloads who want tracing, online evaluation, annotation and experiments in one agent-focused system, and who are comfortable with an enterprise sales process rather than self-serve pricing. | Teams already running Weights & Biases for model training and experiment tracking, who want LLM traces and evals in the same platform as their fine-tuning runs and are comfortable with usage-based ingestion billing. |
Our verdict on HoneyHive
HoneyHive is a genuinely good agent observability platform with a commercial model that will filter out half its potential users before they try it. The product is strong where it counts for agents - OpenTelemetry-based tracing with session replay and multi-agent filtering, and evaluators that run automatically against live production traces rather than only offline datasets. That last capability is the one most tools leave undone, and combined with drift detection, regression alerting and CI/CD integration it forms a coherent quality loop. The free developer tier is honest, giving full features at 10,000 events a month. Above that, there is no published pricing of any kind. Everything is custom and contact-sales. For an enterprise buyer that is normal. For a team trying to compare five platforms on cost before committing engineering time, it is a wall, and it means you cannot know whether HoneyHive is competitive without entering a sales cycle.
Full HoneyHive review →Our verdict on W&B Weave
W&B Weave is the strongest option in the category for one specific team - the one already on Weights & Biases. The lineage story is real and unmatched - a model fine-tuned in Sweeps and the eval run testing it appear in the same interface, which no AI-native competitor can offer because none of them do training. The instrumentation API is excellent, the custom scorers are plain Python, and the integration coverage is among the broadest available. Two things temper it. The billing metric is GB of trace data ingested, which is genuinely harder to forecast than per-span or per-seat pricing because it scales with prompt and context size, not just traffic. And CoreWeave now owns it following a reported $1.7B acquisition, which has come with interoperability pledges but leaves an open question about long-term direction. If you are not already a W&B customer, the bundled per-seat maths works against you and there are cheaper focused tools.
Full W&B Weave review →Frequently Asked Questions
What is the main difference between HoneyHive and W&B Weave?
HoneyHive: Teams running agent-heavy production workloads who want tracing, online evaluation, annotation and experiments in one agent-focused system, and who are comfortable with an enterprise sales process rather than self-serve pricing. W&B Weave: Teams already running Weights & Biases for model training and experiment tracking, who want LLM traces and evals in the same platform as their fine-tuning runs and are comfortable with usage-based ingestion billing. Both sit in Observability & Tracing, so the decision usually comes down to billing model and deployment rather than raw capability.
Which is cheaper, HoneyHive or W&B Weave?
It depends entirely on your workload shape, because they meter differently - HoneyHive bills on event and W&B Weave bills on gb-ingested. Published starting prices are Custom (contact sales) and Per-seat plus usage respectively, but those numbers are not comparable until you apply them to the same traffic. Use our cost calculator to model both against your own request volume and span count.
Can I self-host HoneyHive or W&B Weave?
HoneyHive: No or paid tier only. W&B Weave: No or paid tier only. Free self-hosting means no licence fee, not no cost - you still own the infrastructure, upgrades and on-call.